Precipitate microstructure evolution in low-cycle fatigued INCONEL superalloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F12%3A00389035" target="_blank" >RIV/61389005:_____/12:00389035 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081723:_____/12:00389035

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Precipitate microstructure evolution in low-cycle fatigued INCONEL superalloys

Popis výsledku v původním jazyce

The critical parts of a turbine made of Ni-base superalloy are subjected to cyclic elasticplastic straining as a result of heating and cooling during start-up and shut-down periods. Consequently, low-cycle fatigue up to working temperature of 900°C is animportant factor in the service life. It is connected with a change of microstructure of matrix and precipitates. Nickel base superalloy Inconel was studied after low-cycle fatigue by exand in-situ SANS. It was found that additional precipitation occursat 700°C. The precipitates are created regardless the application of the mechanical load. Nevertheless, these small precipitates could influence low-cycle fatigue parameters, as indicated by the anomaly at the same temperature. The small (up to 10 nm at700°C) precipitates are highly probably not a second population of ?´. Possible explanations are carbides or TCP phase. The limits of the precipitate phase temperature range were roughly determined.

Název v anglickém jazyce

Precipitate microstructure evolution in low-cycle fatigued INCONEL superalloys

Popis výsledku anglicky

The critical parts of a turbine made of Ni-base superalloy are subjected to cyclic elasticplastic straining as a result of heating and cooling during start-up and shut-down periods. Consequently, low-cycle fatigue up to working temperature of 900°C is animportant factor in the service life. It is connected with a change of microstructure of matrix and precipitates. Nickel base superalloy Inconel was studied after low-cycle fatigue by exand in-situ SANS. It was found that additional precipitation occursat 700°C. The precipitates are created regardless the application of the mechanical load. Nevertheless, these small precipitates could influence low-cycle fatigue parameters, as indicated by the anomaly at the same temperature. The small (up to 10 nm at700°C) precipitates are highly probably not a second population of ?´. Possible explanations are carbides or TCP phase. The limits of the precipitate phase temperature range were roughly determined.

Druh

D - Stať ve sborníku

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GAP204%2F11%2F1453" target="_blank" >GAP204/11/1453: Analýza složek cyklického napětí moderních vysokoteplotně odolných konstrukčních materiálů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

SAS 2012 - Proceedings of the 15th International Small-Angle Scattering Conference

ISBN

1-921268-15-8

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

482-486

Název nakladatele

SAS Conference

Místo vydání

Sydney

Místo konání akce

Sydney

Datum konání akce

18. 11. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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